Question

I am trying to have my page call a method and, if it fails, display an error in my mbResult control. However, since my method is a void method, I am having a hard time throwing the exception. If I throw it from the method end it will not display in my error box.

I have the following code in my my page:

try
{
    Facade.AcceptChanges();
} 
catch(FarAlreadyExistsException) 
{
    mbResult.Message = new MessageInfo(FutureActivitiesAlreadyExistsMessage);
    return;
}

the accept changes method is this

public void AcceptChanges() 
{
    try
    {
        DataContext.SaveChanges();
    }
    catch (Exception) 
    {
        return;
    }
}

Answer 1

Remove the second try-catch to let the exception get caught in your first catch block:

public void AcceptChanges() 
{
    DataContext.SaveChanges();
}

EDIT: It seems you should also apply the following change:

try
{
    Facade.AcceptChanges();
} 
catch(Exception) // according to the documentation, this should be an OptimisticConcurrencyException
{
    mbResult.Message = new MessageInfo(FutureActivitiesAlreadyExistsMessage);
    return;
}